Relay: [Feature] Implement @once directive

[fedbalves]

Once fragment has 'once' directive, all refetch queries get data from Relay Store and not from API.

[mrtnzlml]

@fedbalves Refetch container has fetchPolicy with store-or-network value. Is this what are you looking for? https://relay.dev/docs/en/refetch-container#arguments-1

[fedbalves]

@fedbalves Refetch container has fetchPolicy with store-or-network value. Is this what are you looking for? https://relay.dev/docs/en/refetch-container#arguments-1

Maybe. I'll look into it.
Thanks

[sibelius]

use fetchPolicy to fix this

also read this to improve your cache strategy

https://medium.com/@helielson/caching-fields-on-relay-modern-with-hooks-30d76502e404